Originally Posted by kdub

The collar adapters lock onto the existing shock collar and I use the silver screw as a reference when adjusting my car on the fly. We wanted something that was simple, inexpensive, and easy to install. Like many of you, I started testing the 12mm springs with Traxxas upper adapters, but they didn't stay concentric and they were a pain to adjust ride height. Because of this simple design, you get all of the function for almost half of the price. It all looks like one piece once it's installed.

Tip: If you haven't already notched your small shock collars, add a notch in them to help align the adapter set screw on installation and to help it lock to the inner collar. Make sure your collars are at the same height on both shocks before notching them!